I don't have any to offer you, meaning I'm no help.
But, you realize what you could be doing?
Each and every time 1 person requests a page, you'll be having PHP go to MySQL to retrieve the almost always the same page template(s). MySQL is fast, but you start piling on web traffic and queries for more useful information, you may end up stressing MySQL more than you need to.
A file system rocks at handling files. A database is great for handling data. You might think about storing your file not in the database but in the file system.
Also something to ponder: how will you get templates in and out of MySQL (when its time to update them)? You could build a web interface and make it work that way or maybe a file uploader.
But FTP is usually easier to deal with. And if need be, you can still build your interface that you would have had to build for MySQL, but store the file not in the database but in the file system.
I'm pretty sure the file system is where you want to store your templates for performance.